Polar transmitter amplifier with variable output power

Details Polar transmitter amplifier with variable output power Polar transmitter amplifier with variable output power

2006-06-29

2010-10-19

Trinh, Sonny (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Frequency or phase modulation

C455S552100, C455S127300

Reexamination Certificate

active

07817962

ABSTRACT:
Various embodiments are disclosed relating to wireless systems, and also relating to transmitter amplifiers, such as, for example, polar transmitter amplifiers with variable output power. According to an example embodiment, a circuit is provided including a plurality of selectable amplifier cells. Each amplifier cell may receive a phase or frequency modulated signal and an amplitude modulated signal. Each amplifier cell may output a signal based upon a combination of the received amplitude modulated signal and the received phase or frequency modulated signal if the amplifier cell is selected. The circuit may provide a variable output current or output power based upon the selection of one or more of the amplifier cells.

REFERENCES:
patent: 7257380 (2007-08-01), Darabi et al.
patent: 7539462 (2009-05-01), Peckham et al.
patent: 2006/0068725 (2006-03-01), Zolfaghari
patent: 2007/0230612 (2007-10-01), Ahmed
patent: 2007/0247253 (2007-10-01), Carey et al.
patent: 2007/0291875 (2007-12-01), Lee et al.
patent: 2007/0298731 (2007-12-01), Zolfaghari

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